/**
 * Copyright (C) 2017 - 2020 https://github.com/joewee
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.bifrost.workflow.price;

import com.bifrost.entity.CouponDetail;
import com.bifrost.entity.Order;
import com.bifrost.entity.OrderCoupon;
import com.bifrost.repository.CouponDetailRepository;
import com.bifrost.repository.CustomerRepository;
import com.bifrost.service.CouponService;
import com.bifrost.workflow.BaseActivity;
import com.bifrost.workflow.ProcessContext;
import com.bifrost.wrapper.CouponWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.math.BigDecimal;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @author joewee
 * @version 1.0.0
 * @Date 2017/11/14 13:55
 */
@Component("couponActivity")
public class CouponActivity extends BaseActivity<ProcessContext<Order>> {
    @Autowired
    CouponService couponService;
    @Autowired
    CouponDetailRepository couponDetailRepository;
    @Autowired
    CustomerRepository customerRepository;
    public static final int ORDER = 5000;

    public CouponActivity() {
        setOrder(ORDER);
    }

    @Override
    public ProcessContext<Order> execute(ProcessContext<Order> context) throws Exception {
        Order order = context.getSeedData();
        List<OrderCoupon> coupons = order.getOrderCoupons();
        if (coupons == null || coupons.isEmpty()) {
            order.setTotalOffer(BigDecimal.ZERO);
        } else {
            List<CouponDetail> couponDetails = coupons.stream().map(OrderCoupon::getCouponDetail).collect(Collectors.toList());
            List<CouponWrapper> wrappers = couponService.validate(order, couponDetails);
            if (wrappers == null || wrappers.isEmpty()) {
                order.setTotalOffer(BigDecimal.ZERO);
            } else {
                BigDecimal sum = wrappers.stream().filter(couponWrapper -> couponWrapper.isAvailable()).map(CouponWrapper::getDetail).map(CouponDetail::getDiscountAmount).reduce(BigDecimal::add).get();
                order.setTotalOffer(sum);
            }
        }
        return context;
    }
}
